How to Make Mushroom Spawn Bags at Home (Cheap & Easy DIY Guide)

Tired of overpriced mushroom grow kits and unreliable tek methods? In this video, I’ll show you how to make professional-quality mushroom spawn bags at home—cheaply, easily, and with gear you’ll actually reuse. Whether you grow lion’s mane, oysters, or shiitake, this step-by-step tutorial has everything you need to start making your own sterile grain spawn.

🔧 What you’ll learn:
• The best grains to use (and where to get them)
• How to prep, hydrate, and dry your grain properly
• Tips for sealing, sterilizing, and avoiding contamination
• My full spawn bag setup with links below

👇 All gear linked below 👇

Liquid Cultures https://happymycelium.com

Pressure cooker https://amzn.to/4jy2m4V
0.2 micron Spawn Bag https://amzn.to/3ZSo9NA
Self-healing Injection port https://amzn.to/4jFWoPD
Impulse sealer https://amzn.to/4kOey2p
Screen for draining (mines from home depot for $8 but this is similar) https://amzn.to/3Zhjd4N
Whole oats (cheaper to buy in person) https://amzn.to/4dQnIsV
10 QT pot https://amzn.to/3HuuCrR

These are amazon affiliate links and I will receive a small commission for any purchases made through these links.

Also I didn't really circle back to why this is so valuable, so let me do it here. It's a little "mathy."

This is assuming we want 10 pounds of spawn.

So if you look at a bag of unclebens rice, its $2.50 for 8 ounces. to get 10 pounds of rice "spawn", I need $50.

The pressure cooker was 100 bucks when i bought it and the impulse sealer was 20. So 120 for starters.

The bags work out to maybe 30 cents a bag, the injection port is like 15 cents per. Plus the oats. I got 50 pounds for 25 bucks. To get 10 pounds of hydrated oats, we need 4 pounds dry. Or 8% of the bag. Well 8% of that cost is 4 bucks.

So to make 4, 2.5 pound bags, i need $1.20 in bags, 60 cents in injection ports, and 4 dollars in oats. For a total of $5.80 plus, of course, the cost of propane to sterilize.

If you plan on doing this more than once or twice, it easily pays for itself.

Just doing 10 pounds of uncle bens tek three times would put you ahead. Long-term.

Just my 2 cents.

💬 Got questions? Drop them in the comments—I'm happy to help!